P2P: Allow P2P IE without Device Info in (Re)Assoc Req

This can happen, e.g., when a P2P client connects to a P2P group
using the infrastructure WLAN interface instead of P2P group
interface. In that case, the P2P client may behave as if the GO
would be a P2P Manager WLAN AP.

src/ap/ieee802_11.c

@@ -781,8 +781,12 @@ static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
 							  P2P_IE_VENDOR_TYPE);
 
 		if (p2p_group_notif_assoc(hapd->p2p_group, sta->addr,
-					  ies, ies_len) < 0)
+					  ies, ies_len) < 0) {
+			wpa_printf(MSG_DEBUG, "P2P: Invalid P2P IE in "
+				   "(Re)Association Request frame from "
+				   MACSTR, MAC2STR(sta->addr));
 			return WLAN_STATUS_UNSPECIFIED_FAILURE;
+		}
 	} else {
 		wpabuf_free(sta->p2p_ie);
 		sta->p2p_ie = NULL;

src/p2p/p2p_group.c

@@ -323,8 +323,18 @@ int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr,
 	m->client_info = p2p_build_client_info(addr, m->p2p_ie, &m->dev_capab,
 					       m->dev_addr);
 	if (m->client_info == NULL) {
+		/*
+		 * This can happen, e.g., when a P2P client connects to a P2P
+		 * group using the infrastructure WLAN interface instead of
+		 * P2P group interface. In that case, the P2P client may behave
+		 * as if the GO would be a P2P Manager WLAN AP.
+		 */
+		wpa_msg(group->p2p->cfg->msg_ctx, MSG_DEBUG,
+			"P2P: Could not build Client Info from P2P IE - "
+			"assume " MACSTR " is not a P2P client",
+			MAC2STR(addr));
 		p2p_group_free_member(m);
-		return -1;
+		return 0;
 	}
 
 	m->next = group->members;